"Barrage" is a fast-paced shooting game where aiming is unnecessary, and players can switch between attack and defense modes swiftly. The game features four unlockable weapons, including the ZSU-23-4 "Shilka" Autocannon and M48 "Chaparral" Missile, to defend against a combination attack of WWII and Cold War aircraft, as well as unidentified WunderWaffen and UFOs. The game encourages players to be trigger-happy and take down enemies with powerful weapons.